From 1c57956bf6f7dd20832c148925826e57f4c9caa3 Mon Sep 17 00:00:00 2001
From: Tim Abbott <tabbott@humbughq.com>
Date: Tue, 23 Apr 2013 13:53:11 -0400
Subject: [PATCH] Avoid an unnecessary load_old_messages call on page load.

Previously, our check for whether we needed to call load_old_messages
a second time on page load to get up to the present caused us to
basically always do such a call.

(imported from commit b599041e8c0853b4c8c9ab2def6679142302523e)
---
 zephyr/static/js/zephyr.js | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/zephyr/static/js/zephyr.js b/zephyr/static/js/zephyr.js
index 871f3c73b0..e51d513c87 100644
--- a/zephyr/static/js/zephyr.js
+++ b/zephyr/static/js/zephyr.js
@@ -907,16 +907,18 @@ $(function () {
         }
 
         // catch the user up
-        if (messages.length !== 1) {
+        if (messages.length !== 0) {
             var latest_id = messages[messages.length-1].id;
-            load_old_messages({
-                anchor: latest_id,
-                num_before: 0,
-                num_after: 400,
-                msg_list: home_msg_list,
-                cont: load_more
-            });
-            return;
+            if (latest_id < page_params.max_message_id) {
+                load_old_messages({
+                    anchor: latest_id,
+                    num_before: 0,
+                    num_after: 400,
+                    msg_list: home_msg_list,
+                    cont: load_more
+                });
+                return;
+            }
         }
         // now start subscribing to updates
         get_updates();